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Influence of gamma radiation on the structural and optical properties of thulium-doped glass

•Some structural changes occur inside the glass samples after the radiation process.•The density has a maximum value at 20kGy and minimum value at 35kGy.•The optical band gap decreases due to formation of defects,NBOs and free electrons. A few selected numbers of researches has been done to study th...

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Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2017-12, Vol.226, p.158-163
Main Authors: Halimah, M.K., Hasnimulyati, L., Zakaria, A., Halim, S.A., Ishak, M., Azuraida, A., Al-Hada, Naif Muhammed
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cited_by cdi_FETCH-LOGICAL-c328t-b7b9faebd5638e39114410654879e81837fc7c40fc7cefc2d4b833eee94b89b43
cites cdi_FETCH-LOGICAL-c328t-b7b9faebd5638e39114410654879e81837fc7c40fc7cefc2d4b833eee94b89b43
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container_title Materials science & engineering. B, Solid-state materials for advanced technology
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creator Halimah, M.K.
Hasnimulyati, L.
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Halim, S.A.
Ishak, M.
Azuraida, A.
Al-Hada, Naif Muhammed
description •Some structural changes occur inside the glass samples after the radiation process.•The density has a maximum value at 20kGy and minimum value at 35kGy.•The optical band gap decreases due to formation of defects,NBOs and free electrons. A few selected numbers of researches has been done to study the effect of gamma radiation in structural and optical properties of Tm-doped glass. Hence, the present study is done in order to overcome this problem. Tm-doped glass sample with composition of {[(TeO2)0.7(B2O3)0.3]0.7[ZnO]0.3}0.99{Tm2O3}0.01 was prepared using melt-quenching technique. Density, FTIR, XRD and UV-VIS analyses were done before and after radiation with doses ranging from 10 until 35kGy. With the increment of the radiation dose, the density and molar volume vary; indicating the variation in the compactness of the glass samples. FTIR analysis showed the changes in the absorption bands. The glasses still maintain its amorphous nature as confirmed by the XRD spectra. The direct and indirect optical band gaps showed a decreasing trend due to the breaking of bonds and existence of free electrons. Meanwhile, the other optical data have an increasing trend which was due to the presence of free electrons inside the glass system.
doi_str_mv 10.1016/j.mseb.2017.09.010
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subjects Absorption spectra
Boron oxides
Density
Effects
Electrons
Free electrons
Gamma irradiation
Gamma rays
Molar volume
Optical properties
Quenching
Radiation
Radiation dosage
Structural properties
Tellurite glass
Thulium
Thulium-doped glass
Zinc oxide
title Influence of gamma radiation on the structural and optical properties of thulium-doped glass
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